$\"\"$

The function is $\"\"$ .

Apply first derivative with respect to $\"\"$ .

$\"\"$

Find the relative extrema, by equating $\"\"$ .

$\"\"$

Hence, the critical value is $\"\"$ .

$\"\"$

Substitute $\"\"$ in $\"\"$ .

$\"\"$

The relative extrema point is $\"\"$ .

$\"\"$

Determine the relative extrema, using second derivative test.

Apply second derivative with respect to $\"\"$ .

$\"\"$

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

The relative minimum at $\"\"$ .

$\"\"$

The relative minimum at $\"\"$ .